Nickel-molybdenum-chromium parts for chloride, hypochlorite and mixed-acid service. We machine valve bodies, flanges, impellers and pump housings to ±0.005 mm, then polish the wetted surfaces.
Most problems with this alloy start at the drawing or the setup, not at the machine.
N10276 work-hardens fast. Run stainless speeds and the insert edges rub instead of cut, so the surface tears and the tool wears out in minutes. We start from the alloy's own parameters: lower surface speed, heavier feed per tooth, no dwelling in the cut.
The alloy conducts heat poorly, so the cutting zone keeps it. Without high-pressure coolant aimed at the insert, the workpiece grows, the finish smears, and a thin-wall flange moves after the vise opens. We rough, cool, then take the finish pass on a settled part.
A Ra 3.2 μm surface holds chlorides and starts pitting earlier than a polished one. If the drawing calls for a polished wetted face and the shop ships turned marks, the part passes dimensional inspection and still fails in service.
In pressure and chemical service, the mill certificate matters as much as the dimensions. Without heat numbers tied to the finished lot, a failed batch is impossible to isolate and the whole order becomes suspect.
Two capabilities carry most N10276 jobs: rigid 5-axis setups and controlled wetted-surface finishing.
N10276 sits between commercially pure nickel and a superalloy in how it cuts. It galls against the tool, work-hardens at the surface, and holds heat in the chip and the part. The fix is mechanical: short tool overhangs, carbide grades made for nickel, and a feed high enough to stay under the hardened layer.
We rough with the part well supported on 5-axis centers, then let it cool before the finishing pass. Deep pockets on valve bodies and impeller shrouds get trochoidal paths so the radial engagement stays constant. When the geometry allows it, we mill the seal face and the bore in one setup instead of two.
In chloride and hypochlorite service, pits start at machining marks. We hold Ra 0.8–1.6 μm as the working finish for sealing and wetted faces, and reach Ra 0.2–0.8 μm where the drawing asks for it. Polishing follows the direction of flow, not the direction that is easiest on the lathe.
Every lot gets a material check, in-process monitoring on critical features, and a final inspection before shipment. Reports come on request. If a bore or a seal face has a tolerance tighter than the process can hold repeatedly, we say so at the DFM stage rather than after the first article.
Pick the alloy by the chemistry in the line, not by habit.
| Service condition | N10276 | 316L / 904L | Verdict |
|---|---|---|---|
| Wet chloride, pitting risk | Resists pitting and crevice attack | Pits above moderate chloride levels | Use N10276 |
| Hypochlorite and chlorine dioxide | Good resistance at ambient to warm | Poor, rapid attack | Use N10276 |
| Sulfuric acid, mixed with chlorides | Handles mixed acid plus chloride | Chloride breaks it down | Use N10276 |
| Seawater, low velocity | Resistant, but costly | Acceptable in many cases | 316L often enough |
| Dry gas, no moisture | Over-specified | Fine at low cost | Skip the nickel alloy |
| Oxidizing nitric service | Not the first choice | Better in strong nitric | Check other grades |
Compound-angle ports, impeller passages and contoured seal faces cut in a single setup on 16 simultaneous 5-axis centers.
Flanges, housings and shafts turned and milled with mill-turn centers so concentric features stay concentric.
Flat plates, cover plates and drilled manifolds where the geometry does not need full simultaneous motion.
Polishing, bead blasting and brushing on wetted faces, with Ra measured on the finished part.
One-off valve internals and test coupons before the production run locks in the process.
Dimensional reports, material traceability and finish measurements issued with the lot on request.
Numbers below are the working limits, not best-case one-offs.
| Parameter | Capability | Notes |
|---|---|---|
| Tolerance | ±0.005 mm (±0.0002 in) | On critical features, checked in-process |
| Surface finish | Ra 0.8–1.6 μm | Ra 0.2–0.8 μm on request |
| Maximum part size | 4,000 mm | On the large-travel machines |
| Typical travel | 750 × 1,150 × 550 mm | Most valve and pump parts fit here |
| Quantity | 1 to 10,000+ pieces | No minimum order quantity |
| Lead time | Quote in 12 hours, parts in 3–5 days | After drawing review and material availability |
| Inspection | 100% before shipment | Reports on request |
| Confidentiality | NDA available on request | Uploads handled as confidential |
Founded in 2011. Fifteen years of work in Inconel, Hastelloy and titanium, not a sideline to aluminum parts.
Held on critical features across the lot, not just on the first article.
127 high-precision CNC machines across three wholly-owned plants, so a rush job does not wait behind a long queue.
Complex ports and contoured faces machined without stacking setups and adding error.
Drawings reviewed and quoted within 12 hours. Production can start within 24 hours after approval.
Backed by raw material checks, in-process monitoring and final inspection before shipment.
Valve bodies and pump housings for chloride and mixed-acid lines. Wetted faces polished to Ra 0.8–1.6 μm, dimensions checked per feature.
Flanges, manifolds and seal components for sour and chloride-bearing service. Material traceability kept with the lot.
Impellers and wear parts exposed to chlorine dioxide bleach lines. Impeller passages machined on 5-axis in one setup.
Damper shafts, spray nozzles and duct hardware for wet scrubber service. Small runs accepted from one piece.
Yes. Send the material with its mill certificate and heat number, and we will machine to your drawing and keep the traceability with the finished lot.
If you would rather we source it, tell us the specification and form. We will confirm availability before quoting a ship date.
Ra 0.8–1.6 μm is the working standard for sealing and wetted faces. It removes most turning marks that would start pitting.
For critical seal faces, specify Ra 0.2–0.8 μm. Below that, cost climbs quickly and the gain in corrosion resistance is small.
No. It earns its cost in wet chloride, hypochlorite, chlorine dioxide and mixed acid plus chloride service.
In dry gas, low-chloride seawater or strong nitric acid, 316L, 904L or another grade often works and costs far less. Say what is in the line and we will tell you if the alloy is over-specified.
Rough with the part fully supported, let it cool, then take the finish pass. We keep radial engagement constant and avoid dwelling in the cut, which is what builds local heat.
On thin flanges we check the critical faces after the vise is released, not while the part is still clamped.
There is no minimum order quantity. We machine from one prototype to runs of 10,000 pieces or more.
Prototypes and test coupons are a normal starting point for a new N10276 part.
Quotation and free DFM analysis within 12 hours of receiving drawings. Production can start within 24 hours after approval.
Parts ship in 3–5 days. That depends on drawing review and material availability, which we confirm before committing.
Yes. An NDA is available on request, and uploads are handled as confidential.
If your drawings carry export-control markings, tell us at the start so we can confirm the job fits before you send files.
Deep narrow slots, sharp internal corners and tolerances tighter than the function needs are the usual cost drivers in this alloy.
A slightly larger corner radius or a looser tolerance on a non-sealing face often removes a second setup. Send the drawing and we will mark those spots in the DFM review.
Tell us the service chemistry and the critical faces. We will confirm the alloy is right, quote in 12 hours, and inspect every part before it ships.
12-hour quote100% inspectionNo minimum order quantityNDA on request
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Upload your 3D model or 2D drawing and get a quotation with a free DFM analysis. Maximum processing size 4,000 mm.
CNC Metals 13 grades
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